8.7

CVE-2026-28737: gitea gitea open source git server Cross-site Scripting

CVSS: 8.7v3.1HighDeferred
AliasesGHSA-9cpj-qc93-vw8vGO-2026-5286
Published 03-07-2026Last modified 07-07-2026
Open JSON

Vulnerability summary

CVE-2026-28737 is a high (CVSS 8.7) Cross-site Scripting vulnerability in gitea gitea open source git server. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.9% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 03-07-2026
    PublishedVulnerability first disclosed.
  2. 07-07-2026
    Last modifiedVulnerability information updated.

Description

Gitea versions from 1.25.0 before 1.26.0 allow stored cross-site scripting through the extensionsRequired field in glTF files rendered by the 3D file viewer.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

0.00 pp

From 0.43% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Code.gitea.io1 product
  • gitea≥ 1.25.0, < 1.26.0
Gitea1 product

2 vendors · 2 products

References

5 links